From 2ac521d3325a24f01c1f1e86c74537b831d282c5 Mon Sep 17 00:00:00 2001
From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Date: Wed, 6 Aug 2014 16:10:18 -0700
Subject: [PATCH] lib: bitmap: micro-optimize bitmap_allocate_region
__reg_op(..., REG_OP_ALLOC) always returns 0, so we might as well use that
and save an instruction.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
lib/bitmap.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/lib/bitmap.c b/lib/bitmap.c
index c2f3807b3601..faaf7206d4cf 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1154,8 +1154,7 @@ int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order)
{
if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
return -EBUSY;
- __reg_op(bitmap, pos, order, REG_OP_ALLOC);
- return 0;
+ return __reg_op(bitmap, pos, order, REG_OP_ALLOC);
}
EXPORT_SYMBOL(bitmap_allocate_region);